39650973443 has 2 divisors, whose sum is σ = 39650973444. Its totient is φ = 39650973442.

The previous prime is 39650973413. The next prime is 39650973529. The reversal of 39650973443 is 34437905693.

It is a happy number.

39650973443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (34437905693) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39650973443 is a prime.

It is not a weakly prime, because it can be changed into another prime (39650973413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19825486721 + 19825486722.

It is an arithmetic number, because the mean of its divisors is an integer number (19825486722).

Almost surely, 2^39650973443 is an apocalyptic number.

39650973443 is a deficient number, since it is larger than the sum of its proper divisors (1).

39650973443 is an equidigital number, since it uses as much as digits as its factorization.

39650973443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7348320, while the sum is 53.

The spelling of 39650973443 in words is "thirty-nine billion, six hundred fifty million, nine hundred seventy-three thousand, four hundred forty-three".